ENIGMA02GT Posted January 24, 2009 Share Posted January 24, 2009 Hey everybody, Took my 02 LGT to the emissions place here in CO and failed it. I'm completely stock outside of a K&N filter. My CAT, O2 sensor, and Check Engine Light passed, however I failed due to High NOx readings. I am in the process of installing new spark plugs and cleaning my EGR valve. Any other advice would be great! Thanks Link to comment Share on other sites More sharing options...
ehsnils Posted January 24, 2009 Share Posted January 24, 2009 EGR cleaning should improve the situation, that's what it's there for. Just make sure that the EGR works as it should. Search this site for other posts regarding EGR and NOx. NOx peaks actually because of high combustion temperatures, and that also occurs when you have ideal fuel/air mixture. Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 24, 2009 Author Share Posted January 24, 2009 O and my clutch slipped 3 times from what I could see as the tester was trying to keep up with his trail. Would that effect the test? Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 24, 2009 Author Share Posted January 24, 2009 I have looked a bit closer into my Haynes manual and it mentions nothing about an EGR Valve in my 02. It specifically states 2003 to 2006. Where do I go from here? Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 24, 2009 Author Share Posted January 24, 2009 I just pulled my spark plugs and 3 out of the 4 had oil on them. My #4 cylinder was the worse. Could the affect my spark plugs to the point that it would affect my Emissions Test? Also where is the oil coming from? Bad Valves? Bad Piston Rings? I need help bad!!!! Thanks Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 24, 2009 Author Share Posted January 24, 2009 Update..... Between the front of my CAT and back of my CAT there is a rusted out spot where exhaust is seaping out of. Anybody think that will fix my Emissions issue. I'm looking for any help I can get..... Link to comment Share on other sites More sharing options...
ehsnils Posted January 25, 2009 Share Posted January 25, 2009 It sounds like you need to do a lot of maintenance on your car, replace cat, check oil leak (does it consume much oil?) and since there was oil on most of the spark plugs it's possible that the turbo leaks, but how bad is another issue. Oil leaks aren't good for the cat, so you should check that first. I also suggest that you really take a look and see if you have an EGR valve or not, because it may exist on your car even though the Haynes doesn't specify that it's there. The Haynes manuals aren't covering every variant. Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 25, 2009 Author Share Posted January 25, 2009 02 LGT is a non-turbo charged motor so that'll eliminate that. I spent close to 2 hours of my morning looking for the EGR valve, before I even opened my Haynes manual. You can only look at an Intake Manifold so long. haha I plan to pull my exhaust off today, manifold to muffler, so hopefully I can cut all the rusted bolts holding my rock shields together. I will be checking momentarily for more advice, thanks again. Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 25, 2009 Author Share Posted January 25, 2009 You don't happen to know where a good spot on this is to drop this problem on an EX technician do you. If I can find someone who has fixed this issue already maybe that will help...... Who knows. Link to comment Share on other sites More sharing options...
ehsnils Posted January 25, 2009 Share Posted January 25, 2009 Beats me - maybe someone more local can give you a hand? I happen to be about 10 hours away from your timezone... Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 25, 2009 Author Share Posted January 25, 2009 HAHA I meant on the site. I guess Sweden isn't all that close huh? lol Link to comment Share on other sites More sharing options...
el5y Posted January 25, 2009 Share Posted January 25, 2009 I do know with my old car when there's oil on the plugs that means the valve cover gasket is done, $20 replacement for my old car and about an hour of work. Link to comment Share on other sites More sharing options...
ENIGMA02GT Posted January 26, 2009 Author Share Posted January 26, 2009 Nice, that seems doable..... I'll look into, thanks! Link to comment Share on other sites More sharing options...
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